PT.2 CAT 930M Code 5856–9 | Wiring to the DCU Was the Real Problem 🔧⚡ This one could’ve easily turned into a parts swap, but diagnostics matter. After chasing the fault, the issue wasn’t a failed DCU — it was wiring going to the DCU causing the problem. That’s why we always verify power, ground, and signal before condemning a module. Fix the root cause, not just the symptom. ✅🦏 ⸻ #RhinoEquipmentServices #HeavyEquipmentRepair #DieselTech #SouthTexas #TekamoHD | Rhino Equipment Services

126 reactions · 9 comments | Troubleshooting a 5856–9 fault code on a CAT 930M loader today - DCU Failue? ️ Digging into the data, checking systems, and tracking it down step by step  This is the kind of diagnostic work that keeps machines running strong and customers moving  Another day in the field getting it done the right way  #HeavyEquipment #DieselTech #FieldService #RhinoEquipmentServices #TekamoHD | Rhino Equipment Services | Facebook